131226256 has 80 divisors (see below), whose sum is σ = 300980736. Its totient is φ = 54263808.

The previous prime is 131226253. The next prime is 131226283. The reversal of 131226256 is 652622131.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131226253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 510480 + ... + 510736.

Almost surely, 2^131226256 is an apocalyptic number.

131226256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 131226256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (150490368).

131226256 is an abundant number, since it is smaller than the sum of its proper divisors (169754480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

131226256 is a wasteful number, since it uses less digits than its factorization.

131226256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416 (or 410 counting only the distinct ones).

The product of its digits is 4320, while the sum is 28.

The square root of 131226256 is about 11455.4029174010. The cubic root of 131226256 is about 508.1675310798.

Adding to 131226256 its reverse (652622131), we get a palindrome (783848387).

The spelling of 131226256 in words is "one hundred thirty-one million, two hundred twenty-six thousand, two hundred fifty-six".